Traction Failure

20 years ago I had a 74 4 door valiant. Similar combo as you. 318, 904 shift kit, 3500 stall 275 first gear ratio, 8 3/4 Detroit locker with 4.30 gears. I ended up putting 275/60/15 mt cheater slicks. I also put super stock springs on. Also put hood scoop on sealed to thermaquad carb. I could pull 1.70 sixty foot times with 13:30"s quarter mile times. 101 mph was the best I could do. My point is if you want to come out of the whole, you got to have tire and suspension to lift the rear skyward.